(19)
(11) EP 0 513 522 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
03.02.1993 Bulletin 1993/05

(43) Date of publication A2:
19.11.1992 Bulletin 1992/47

(21) Application number: 92105955.6

(22) Date of filing: 07.04.1992
(51) International Patent Classification (IPC)5: H05K 3/34, B23K 3/08
(84) Designated Contracting States:
DE FR GB NL

(30) Priority: 09.05.1991 IT MI911268

(71) Applicants:
  • Castoldi, Aldo
    I-20154 Milano (IT)
  • Gullo, Manuela
    I-20154 Milano (IT)

(72) Inventor:
  • Castoldi, Aldo
    I-20154 Milano (IT)

(74) Representative: Dr. Ing. A. Racheli & C. S.r.l. 
Viale San Michele del Carso, 4
20144 Milano
20144 Milano (IT)


(56) References cited: : 
   
       


    (54) Process and apparatus for welding components on printed circuit plates by means of a solder bath


    (57) A process and related apparatus for welding the components on printed circuit plates by means of a bath of solder in the melted state, using wave, weir, vibration, static techniques etc., comprising in succession the following phases: fluxing (2), pre-heating (3), at least one washing (4, 5), the possible replacement of solvents (6), additional fluxing (7), possible pre-heating (8), welding (9) and possible mild washing (10), in which the phases from (4) to (8) are carried out in a controlled atmosphere or in a vacuum.






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